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commsharbor

warnings

commsharbor.com

Transactional e-mail and permission-based campaigns, multi-tenant, with a full audit trail.

https://commsharbor.com/mcpWebsiteOAuthMCP 2025-06-18v8bc77720last checked 20 Oct 2026spoke MCP on 100% of 88 checks (30 days)initialize in 614 ms

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects

The authorization server advertises RFC 7591 registration, so Claude Code can register itself and sign you in through the browser.

claude mcp add --transport http commsharbor https://commsharbor.com/mcp

Claude Code docs · read on 2026-08-30

✓Claude (claude.ai & Desktop)Connects

The authorization server advertises RFC 7591 registration, so Claude (claude.ai & Desktop) can register itself and sign you in through the browser.

Settings → Connectors → Add custom connector, then paste https://commsharbor.com/mcp.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✓ChatGPTConnects

The authorization server advertises RFC 7591 registration, so ChatGPT can register itself and sign you in through the browser.

Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://commsharbor.com/mcp.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

The authorization server advertises RFC 7591 registration, so Cursor can register itself and sign you in through the browser.

{
  "mcpServers": {
    "commsharbor": {
      "url": "https://commsharbor.com/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

The authorization server advertises RFC 7591 registration, so VS Code (Copilot) can register itself and sign you in through the browser.

{
  "servers": {
    "commsharbor": {
      "type": "http",
      "url": "https://commsharbor.com/mcp"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 20 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme
OAuth
Issuer
https://commsharbor.com
Dynamic client registration
✓Advertised (RFC 7591)
Client ID Metadata Document
✓Supported

A client identifies itself by a URL to its own metadata, so no registration step is required.

PKCE
✓S256
Grant types
authorization_code, refresh_token
Scopes
mcp
Protected-resource metadata
✓Published (RFC 9728)
Anonymous access
Handshake succeeds; 34 tools listable
Credentials demanded in prose
✕commsharbor_email_google_catalog, commsharbor_email_google_connect, commsharbor_email_google_resolve, commsharbor_email_google_disconnect, commsharbor_email_trial_activate

These tools are listed anonymously and their own descriptions ask for an account or key, but no challenge is issued — so a client has nothing to act on and the refusal arrives as a tool error.

Documentation
https://commsharbor.com/llms.txt

What the probe found

warningTools needing credentials are listed without a challenge

5 of the 34 tools listed anonymously say in their own descriptions that they need an account or a key (commsharbor_email_google_catalog, commsharbor_email_google_connect, commsharbor_email_google_resolve, commsharbor_email_google_disconnect, commsharbor_email_trial_activate), but the endpoint issued no WWW-Authenticate challenge. The requirement is stated only in prose, so a call reaches the tool and comes back as a tool error instead of an authorization step.

34 tools usable without signing in

The server exposes a public surface before authorization: commsharbor_health, commsharbor_logout, commsharbor_me, commsharbor_context, commsharbor_organization_get, commsharbor_audit, commsharbor_platform_context, commsharbor_email_google_catalog, commsharbor_email_google_connect, commsharbor_email_google_resolve, commsharbor_email_google_disconnect, commsharbor_email_domain_products_list, commsharbor_email_domain_products_add, commsharbor_email_workspace_snapshot, commsharbor_email_workspace, commsharbor_email_trial_activate, commsharbor_email_domain_setup, commsharbor_email_domain_create, commsharbor_email_domain_get, commsharbor_email_domain_verify, commsharbor_email_domain_assistance, commsharbor_email_mailbox_create, commsharbor_email_mailbox_update, commsharbor_email_mailbox_password, commsharbor_email_mailbox_suspend, commsharbor_email_mailbox_resume, commsharbor_email_alias_create, commsharbor_email_alias_update, commsharbor_email_alias_suspend, commsharbor_email_alias_resume, commsharbor_email_job_get, commsharbor_email_service_request, commsharbor_email_security_check, commsharbor_brazil_email_report.

Tools

commsharbor_auditcommsharbor_brazil_email_reportcommsharbor_contextcommsharbor_email_alias_createcommsharbor_email_alias_resumecommsharbor_email_alias_suspendcommsharbor_email_alias_updatecommsharbor_email_domain_assistancecommsharbor_email_domain_createcommsharbor_email_domain_getcommsharbor_email_domain_products_addcommsharbor_email_domain_products_listcommsharbor_email_domain_setupcommsharbor_email_domain_verifycommsharbor_email_google_catalogcommsharbor_email_google_connectcommsharbor_email_google_disconnectcommsharbor_email_google_resolvecommsharbor_email_job_getcommsharbor_email_mailbox_createcommsharbor_email_mailbox_passwordcommsharbor_email_mailbox_resumecommsharbor_email_mailbox_suspendcommsharbor_email_mailbox_updatecommsharbor_email_security_checkcommsharbor_email_service_requestcommsharbor_email_trial_activatecommsharbor_email_workspacecommsharbor_email_workspace_snapshotcommsharbor_healthcommsharbor_logoutcommsharbor_mecommsharbor_organization_getcommsharbor_platform_context

Contract history

20 Oct 2026v8bc777201 compatible
20 Oct 2026v78e0bd5fno contract changes
20 Oct 2026v1d751aafno contract changes
19 Oct 2026v69ba2e04no contract changes
19 Oct 2026v957fd9591 compatible
19 Oct 2026v7ee6e802no contract changes
18 Oct 2026v95771734no contract changes
18 Oct 2026v9d43c39fno contract changes
18 Oct 2026vf5d94337no contract changes
18 Oct 2026v9b9b8052no contract changes
17 Oct 2026v068a4298no contract changes
17 Oct 2026v633d1ceano contract changes
16 Oct 2026v5235c8a0no contract changes
16 Oct 2026v29450b6eno contract changes
16 Oct 2026v27bfaf834 compatible
15 Oct 2026v9e915f6cno contract changes
15 Oct 2026v4db611ff2 breaking27 compatible

Breaking: commsharbor_audit, commsharbor_platform_context

15 Oct 2026v0ddde2ba32 breaking

Breaking: commsharbor_billing_catalog, commsharbor_context, commsharbor_email_alias_create, commsharbor_email_alias_resume, commsharbor_email_alias_suspend, commsharbor_email_alias_update, commsharbor_email_domain_assistance, commsharbor_email_domain_create, commsharbor_email_domain_get, commsharbor_email_domain_products_add, commsharbor_email_domain_products_list, commsharbor_email_domain_setup, commsharbor_email_domain_verify, commsharbor_email_google_catalog, commsharbor_email_google_connect, commsharbor_email_google_disconnect, commsharbor_email_google_resolve, commsharbor_email_job_get, commsharbor_email_mailbox_create, commsharbor_email_mailbox_password, commsharbor_email_mailbox_resume, commsharbor_email_mailbox_suspend, commsharbor_email_mailbox_update, commsharbor_email_plans, commsharbor_email_service_request, commsharbor_email_trial_activate, commsharbor_email_workspace, commsharbor_email_workspace_snapshot, commsharbor_logout, commsharbor_me, commsharbor_organization_get, pricing

14 Oct 2026ve6642a81no contract changes
14 Oct 2026v957806ebno contract changes
14 Oct 2026vffb4b04fno contract changes
13 Oct 2026vaec8753dno contract changes
13 Oct 2026v9b2e203b130 breaking26 compatible1 cosmeticinstructions rewritten

Breaking: commsharbor_audience_create, commsharbor_audience_delete, commsharbor_audience_get, commsharbor_audience_member_add, commsharbor_audience_member_remove, commsharbor_audience_members, commsharbor_audience_update, commsharbor_audiences, commsharbor_billing, commsharbor_billing_purchase, commsharbor_campaign_create, commsharbor_campaign_get, commsharbor_campaign_launch, commsharbor_campaign_report, commsharbor_campaign_update, commsharbor_campaigns, commsharbor_contact_file_get, commsharbor_contact_import_confirm, commsharbor_contact_import_errors, commsharbor_contact_import_get, commsharbor_contact_import_preview, commsharbor_contact_imports, commsharbor_contact_marketing_get, commsharbor_contact_marketing_put, commsharbor_contacts_export, commsharbor_crm_activities_create, commsharbor_crm_activities_delete, commsharbor_crm_activities_get, commsharbor_crm_activities_list, commsharbor_crm_activities_update, commsharbor_crm_companies_create, commsharbor_crm_companies_delete, commsharbor_crm_companies_get, commsharbor_crm_companies_list, commsharbor_crm_companies_update, commsharbor_crm_contacts_create, commsharbor_crm_contacts_delete, commsharbor_crm_contacts_get, commsharbor_crm_contacts_list, commsharbor_crm_contacts_update, commsharbor_crm_deals_create, commsharbor_crm_deals_delete, commsharbor_crm_deals_get, commsharbor_crm_deals_list, commsharbor_crm_deals_update, commsharbor_crm_pipelines_create, commsharbor_crm_pipelines_delete, commsharbor_crm_pipelines_get, commsharbor_crm_pipelines_list, commsharbor_crm_pipelines_update, commsharbor_crm_stages_create, commsharbor_crm_stages_delete, commsharbor_crm_stages_get, commsharbor_crm_stages_list, commsharbor_crm_stages_update, commsharbor_crm_tasks_create, commsharbor_crm_tasks_delete, commsharbor_crm_tasks_get, commsharbor_crm_tasks_list, commsharbor_crm_tasks_update, commsharbor_data_export_create, commsharbor_data_export_download, commsharbor_data_exports, commsharbor_dead_letter_replay, commsharbor_dead_letters, commsharbor_deletion_cancel, commsharbor_deletion_request, commsharbor_deletion_schedule, commsharbor_deliverability, commsharbor_delivery_events, commsharbor_delivery_get, commsharbor_domain_create, commsharbor_domain_deliveries, commsharbor_domain_get, commsharbor_domain_report, commsharbor_domain_smoke, commsharbor_domain_verify, commsharbor_domains, commsharbor_inbox_attachment, commsharbor_inbox_create, commsharbor_inbox_disable, commsharbor_inbox_get, commsharbor_inbox_message, commsharbor_inbox_messages, commsharbor_inboxes, commsharbor_marketing_smoke, commsharbor_message_send, commsharbor_messaging_settings, commsharbor_messaging_settings_update, commsharbor_operations, commsharbor_operations_refresh, commsharbor_platform_crm_activities_create, commsharbor_platform_crm_activities_delete, commsharbor_platform_crm_activities_get, commsharbor_platform_crm_activities_list, commsharbor_platform_crm_activities_update, commsharbor_platform_crm_leads_create, commsharbor_platform_crm_leads_delete, commsharbor_platform_crm_leads_get, commsharbor_platform_crm_leads_list, commsharbor_platform_crm_leads_update, commsharbor_platform_crm_tasks_create, commsharbor_platform_crm_tasks_delete, commsharbor_platform_crm_tasks_get, commsharbor_platform_crm_tasks_list, commsharbor_platform_crm_tasks_update, commsharbor_preference_get, commsharbor_preference_token_create, commsharbor_preference_unsubscribe, commsharbor_suppression_create, commsharbor_suppressions, commsharbor_template_archive, commsharbor_template_create, commsharbor_template_export, commsharbor_template_get, commsharbor_template_import_html, commsharbor_template_preview, commsharbor_template_publish, commsharbor_template_update, commsharbor_template_versions, commsharbor_templates, commsharbor_tracking_domain, commsharbor_tracking_domain_create, commsharbor_tracking_domain_remove, commsharbor_tracking_domain_verify, commsharbor_webhook_create, commsharbor_webhook_deliveries, commsharbor_webhook_disable, commsharbor_webhook_get, commsharbor_webhooks

Instructions rewritten: commsharbor_billing_catalog. The description an agent follows changed; the callable contract may not have.

12 Oct 2026v727562a4no contract changes
12 Oct 2026vd62a8faeno contract changes
12 Oct 2026ve622b94fno contract changes
11 Oct 2026v825702c2no contract changes
11 Oct 2026v7f6da15eno contract changes
11 Oct 2026v0b352172no contract changes
10 Oct 2026v2d7a828fno contract changes
10 Oct 2026v73acb116no contract changes
9 Oct 2026v31af9823no contract changes
9 Oct 2026vf804faa4no contract changes
8 Oct 2026v12ab5ffdno contract changes
8 Oct 2026vd0d6a904no contract changes
8 Oct 2026v9ec8cf5fno contract changes
8 Oct 2026v452b5f93no contract changes
7 Oct 2026v7de55eceno contract changes
7 Oct 2026vb51585abno contract changes
6 Oct 2026ve7680d195 cosmeticinstructions rewritten

Instructions rewritten: commsharbor_inbox_attachment, commsharbor_inbox_create, commsharbor_inbox_disable, commsharbor_inbox_get, commsharbor_inboxes. The description an agent follows changed; the callable contract may not have.

6 Oct 2026vf22c0d46no contract changes
6 Oct 2026v589d9ac4no contract changes
5 Oct 2026v10e512f2no contract changes
5 Oct 2026v2eb01c8cno contract changes
5 Oct 2026vc064adbfno contract changes
4 Oct 2026v9c5cff98no contract changes
4 Oct 2026vb356e3b4no contract changes
3 Oct 2026vdb10b9cano contract changes
3 Oct 2026v1cc3e98ano contract changes
3 Oct 2026v68434b96no contract changes
2 Oct 2026v0129e00fno contract changes
2 Oct 2026v13ee74cano contract changes
2 Oct 2026vf8210e1dno contract changes
1 Oct 2026v3a8d8626no contract changes
1 Oct 2026v5e27e414no contract changes
1 Oct 2026v12c057dano contract changes
30 Sep 2026v38450431no contract changes
30 Sep 2026ve4c8e66eno contract changes
30 Sep 2026v62ebcf5cno contract changes
29 Sep 2026v87e2aa1eno contract changes
29 Sep 2026v4a6ad062no contract changes
29 Sep 2026v20c4f6b2no contract changes
28 Sep 2026va3b67856no contract changes
28 Sep 2026v77988d8dno contract changes
28 Sep 2026v4f1d9997no contract changes
27 Sep 2026ve54d8fa3139 cosmetic
27 Sep 2026v83f9a8e7no contract changes
26 Sep 2026v72953060no contract changes
26 Sep 2026v58cd19582 breaking

Breaking: commsharbor_crm_tasks_create, commsharbor_crm_tasks_update

25 Sep 2026v5edaccf2no contract changes
25 Sep 2026v1e78ad2bno contract changes
24 Sep 2026vd95d5f9eno contract changes
24 Sep 2026v568c8587no contract changes
23 Sep 2026vec218c2c95 cosmeticinstructions rewritten

Instructions rewritten: commsharbor_audience_create, commsharbor_audience_delete, commsharbor_audience_get, commsharbor_audience_member_add, commsharbor_audience_member_remove, commsharbor_audience_members, commsharbor_audience_update, commsharbor_audiences, commsharbor_audit, commsharbor_billing, commsharbor_billing_catalog, commsharbor_billing_purchase, commsharbor_campaign_create, commsharbor_campaign_get, commsharbor_campaign_launch, commsharbor_campaign_report, commsharbor_campaign_update, commsharbor_campaigns, commsharbor_contact_file_get, commsharbor_contact_import_confirm, commsharbor_contact_import_errors, commsharbor_contact_import_get, commsharbor_contact_import_preview, commsharbor_contact_imports, commsharbor_contact_marketing_get, commsharbor_contact_marketing_put, commsharbor_contacts_export, commsharbor_context, commsharbor_crm_contacts_create, commsharbor_crm_contacts_delete, commsharbor_crm_contacts_get, commsharbor_crm_contacts_list, commsharbor_crm_contacts_update, commsharbor_crm_deals_create, commsharbor_crm_deals_delete, commsharbor_crm_deals_get, commsharbor_crm_deals_list, commsharbor_crm_deals_update, commsharbor_data_export_create, commsharbor_data_export_download, commsharbor_data_exports, commsharbor_dead_letter_replay, commsharbor_dead_letters, commsharbor_deletion_cancel, commsharbor_deletion_request, commsharbor_deletion_schedule, commsharbor_deliverability, commsharbor_delivery_events, commsharbor_delivery_get, commsharbor_domain_create, commsharbor_domain_get, commsharbor_domain_smoke, commsharbor_domain_verify, commsharbor_domains, commsharbor_health, commsharbor_inbox_attachment, commsharbor_inbox_create, commsharbor_inbox_disable, commsharbor_inbox_get, commsharbor_inbox_message, commsharbor_inbox_messages, commsharbor_inboxes, commsharbor_logout, commsharbor_marketing_smoke, commsharbor_me, commsharbor_message_send, commsharbor_messaging_settings, commsharbor_messaging_settings_update, commsharbor_operations, commsharbor_operations_refresh, commsharbor_organization_get, commsharbor_platform_context, commsharbor_preference_get, commsharbor_preference_token_create, commsharbor_preference_unsubscribe, commsharbor_suppression_create, commsharbor_suppressions, commsharbor_template_archive, commsharbor_template_create, commsharbor_template_get, commsharbor_template_import_html, commsharbor_template_preview, commsharbor_template_publish, commsharbor_template_update, commsharbor_template_versions, commsharbor_templates, commsharbor_tracking_domain, commsharbor_tracking_domain_create, commsharbor_tracking_domain_remove, commsharbor_tracking_domain_verify, commsharbor_webhook_create, commsharbor_webhook_deliveries, commsharbor_webhook_disable, commsharbor_webhook_get, commsharbor_webhooks. The description an agent follows changed; the callable contract may not have.

23 Sep 2026vd18fe505no contract changes
23 Sep 2026vc4b45a4e11 breaking4 cosmeticinstructions rewritten

Breaking: commsharbor_api_key_create, commsharbor_api_key_revoke, commsharbor_api_keys, commsharbor_invitation_accept, commsharbor_invitation_create, commsharbor_invitations, commsharbor_member_role, commsharbor_members, commsharbor_organization_create, commsharbor_organization_update, commsharbor_organizations

Instructions rewritten: commsharbor_billing, commsharbor_billing_purchase, commsharbor_me, commsharbor_organization_get. The description an agent follows changed; the callable contract may not have.

21 Sep 2026v262d93c5no contract changes
21 Sep 2026va99936e6no contract changes
21 Sep 2026vd904825fno contract changes
20 Sep 2026vdd384375no contract changes
20 Sep 2026vb621b277no contract changes
20 Sep 2026vedeb64b6no contract changes
19 Sep 2026vc86b681bno contract changes
17 Sep 2026vffd12ea8no contract changes
17 Sep 2026v1d230879no contract changes
16 Sep 2026v9e6f0641no contract changes
16 Sep 2026vdfb860a9no contract changes
16 Sep 2026v5924ccf5no contract changes
15 Sep 2026v8d7efa8cno contract changes
15 Sep 2026vb4e58640no contract changes
15 Sep 2026v0e2415e9no contract changes
14 Sep 2026v8ab5fe52no contract changes
14 Sep 2026vaded9f0b3 breaking

Breaking: commsharbor_auth_start, commsharbor_auth_verify, commsharbor_profile_update

14 Sep 2026v6977eb54no contract changes
13 Sep 2026v396dc0641 compatible
13 Sep 2026v12cf1823no contract changes
13 Sep 2026vce35a762no contract changes
12 Sep 2026v7df44977no contract changes
12 Sep 2026v6d417292no contract changes
12 Sep 2026v7c65b44eno contract changes
11 Sep 2026v5c88bddcno contract changes
11 Sep 2026v3a70437dno contract changes
11 Sep 2026v3caecb8fno contract changes
10 Sep 2026vd20a5f26no contract changes
10 Sep 2026vd0efa7b4no contract changes
9 Sep 2026v462a97beno contract changes
9 Sep 2026v294c424ano contract changes
9 Sep 2026v3fea883eno contract changes
8 Sep 2026v16dd35c611 compatible1 cosmetic
8 Sep 2026v8dacaf8ano contract changes
8 Sep 2026vea22c570no contract changes
7 Sep 2026v4c8acd08no contract changes
7 Sep 2026v49a9b54c9 breaking65 cosmeticinstructions rewritten

Breaking: commsharbor_audience_create, commsharbor_campaign_update, commsharbor_contact_import_preview, commsharbor_contact_marketing_put, commsharbor_crm_tasks_create, commsharbor_crm_tasks_update, commsharbor_invitation_create, commsharbor_member_role, commsharbor_messaging_settings_update

Instructions rewritten: commsharbor_crm_activities_create, commsharbor_crm_activities_delete, commsharbor_crm_activities_get, commsharbor_crm_activities_list, commsharbor_crm_activities_update, commsharbor_crm_companies_create, commsharbor_crm_companies_delete, commsharbor_crm_companies_get, commsharbor_crm_companies_list, commsharbor_crm_companies_update, commsharbor_crm_contacts_create, commsharbor_crm_contacts_delete, commsharbor_crm_contacts_get, commsharbor_crm_contacts_list, commsharbor_crm_contacts_update, commsharbor_crm_deals_create, commsharbor_crm_deals_delete, commsharbor_crm_deals_get, commsharbor_crm_deals_list, commsharbor_crm_deals_update, commsharbor_crm_pipelines_create, commsharbor_crm_pipelines_delete, commsharbor_crm_pipelines_get, commsharbor_crm_pipelines_list, commsharbor_crm_pipelines_update, commsharbor_crm_stages_create, commsharbor_crm_stages_delete, commsharbor_crm_stages_get, commsharbor_crm_stages_list, commsharbor_crm_stages_update, commsharbor_crm_tasks_create, commsharbor_crm_tasks_delete, commsharbor_crm_tasks_get, commsharbor_crm_tasks_list, commsharbor_crm_tasks_update, commsharbor_platform_crm_activities_create, commsharbor_platform_crm_activities_delete, commsharbor_platform_crm_activities_get, commsharbor_platform_crm_activities_list, commsharbor_platform_crm_activities_update, commsharbor_platform_crm_leads_create, commsharbor_platform_crm_leads_delete, commsharbor_platform_crm_leads_get, commsharbor_platform_crm_leads_list, commsharbor_platform_crm_leads_update, commsharbor_platform_crm_tasks_create, commsharbor_platform_crm_tasks_delete, commsharbor_platform_crm_tasks_get, commsharbor_platform_crm_tasks_list, commsharbor_platform_crm_tasks_update. The description an agent follows changed; the callable contract may not have.

6 Sep 2026v4963d1f9no contract changes
6 Sep 2026v828b464bno contract changes
6 Sep 2026v074a2a11no contract changes
5 Sep 2026v2d690e87no contract changes
5 Sep 2026vbe38ce77no contract changes
5 Sep 2026vb852c8c1first recorded contract

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Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

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